Finding the Fourth Proportional to 71,825.31, 99,118.87 and 39,560.15

Step by Step Solution

1. Step 1: Write the proportion equation
   71,825.31 : 99,118.87 = 39,560.15 : x
2. Step 2: Convert to fraction form
   71,825.31/99,118.87 = 39,560.15/x
3. Step 3: Cross multiply
   71,825.31x = 99,118.87 × 39,560.15
4. Step 4: Simplify right side
   71,825.31x = 3,921,157,513.93
5. Step 5: Solve for x
   x = 3,921,157,513.93/71,825.31
6. Step 6: Final answer
   x = 54,592.98